$ git clone -n https://src.fedoraproject.org/rpms/charliecloud.git /var/lib/mock/f42-bootstrap-3462121-45558/root/chroot_tmpdir/scmroot/charliecloud
Cloning into '/var/lib/mock/f42-bootstrap-3462121-45558/root/chroot_tmpdir/scmroot/charliecloud'...
$ git fetch origin abfcef9251a9240bf0d16f4613f71cd64b718fa6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/charliecloud
 * [new ref]         abfcef9251a9240bf0d16f4613f71cd64b718fa6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at abfcef9 Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild