$ git clone -n https://src.fedoraproject.org/rpms/python-mnemonic.git /var/lib/mock/f39-build-1556435-37189/root/chroot_tmpdir/scmroot/python-mnemonic
Cloning into '/var/lib/mock/f39-build-1556435-37189/root/chroot_tmpdir/scmroot/python-mnemonic'...
$ git fetch origin b0e38a5aecb0db179d9c75ca20e93f04bb1fe5ae:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-mnemonic
 * [new ref]         b0e38a5aecb0db179d9c75ca20e93f04bb1fe5ae -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b0e38a5 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild