$ git clone -n https://src.fedoraproject.org/rpms/libalkimia.git /var/lib/mock/f40-build-790371-136512/root/chroot_tmpdir/scmroot/libalkimia
Cloning into '/var/lib/mock/f40-build-790371-136512/root/chroot_tmpdir/scmroot/libalkimia'...
$ git fetch origin acb9618d14f7c5e3e2e04c45aacb028147df9be6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libalkimia
 * [new ref]         acb9618d14f7c5e3e2e04c45aacb028147df9be6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at acb9618 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild