Issue with patch cache when branch is used as a version

Steps to reproduce

I tried to install a development branch of the ESMF package but it did not work. I just add following code to ESMF package.py to make available all branches and tags in the package.

   import subprocess
...
...
...
   # list refs/heads and refs/tags and add them as version
    git_exe = which('git', required=True)
    cmd = '{} ls-remote --refs {}'.format(git_exe, git)
    git_lst = subprocess.run(cmd, shell=True, text=True, stdout=subprocess.PIPE).stdout.splitlines()

    # loop over list and define them as version
    for item in git_lst:
        # split item as hash, branch/tag name
        item_lst = list(item.split('\t'))

        # replace / with _ in version name since spack does not good with / in the version string
        _name = item_lst[1]
        refs_name = _name.replace('refs/heads/', '')
        refs_name = refs_name.replace('refs/tags/', '')
        version_name = refs_name.replace('/', '_')

        # skip some common branches
        if 'gh-pages' in _name:
            continue

        # add tags and branches to the version
        if 'refs/tags' in _name:
            version(version_name, tag=refs_name)
        elif 'refs/heads' in _name:
            version(version_name, branch=refs_name)

and then I tried to install esmf@io_multitile.

Error message

spack_debug.txt

Information on your system

• Spack: 0.18.0 (b071aa6bdec725a2912b9fb34d579cfa07da6c2d)
• Python: 3.10.4
• Platform: linux-ubuntu22.04-haswell
• Concretizer: clingo

General information

• I have run spack debug report and reported the version of Spack/Python/Platform
• I have searched the issues of this repo and believe this is not a duplicate
• I have run the failing commands in debug mode and reported the output