$ git clone -n https://src.fedoraproject.org/rpms/charliecloud.git /var/lib/mock/f39-build-1570608-37773/root/chroot_tmpdir/scmroot/charliecloud
Cloning into '/var/lib/mock/f39-build-1570608-37773/root/chroot_tmpdir/scmroot/charliecloud'...
$ git fetch origin 1ef1e330ebee0b2c2aaedcdfd1ac53d982ccb8a7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/charliecloud
 * [new ref]         1ef1e330ebee0b2c2aaedcdfd1ac53d982ccb8a7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1ef1e33 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild