$ git clone -n https://src.fedoraproject.org/rpms/gap-pkg-crystcat.git /var/lib/mock/f38-build-side-42-init-devel-888799-28525/root/chroot_tmpdir/scmroot/gap-pkg-crystcat
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-888799-28525/root/chroot_tmpdir/scmroot/gap-pkg-crystcat'...
$ git fetch origin a2a826cff8331e30fdf3cf76aa51b59313903ac3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gap-pkg-crystcat
 * [new ref]         a2a826cff8331e30fdf3cf76aa51b59313903ac3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a2a826c Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild