$ git clone -n https://src.fedoraproject.org/rpms/mcelog.git /var/lib/mock/f40-build-791394-137477/root/chroot_tmpdir/scmroot/mcelog
Cloning into '/var/lib/mock/f40-build-791394-137477/root/chroot_tmpdir/scmroot/mcelog'...
$ git fetch origin 75587e8c965a1f14f8bd3da824022e6a8de3183a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mcelog
 * [new ref]         75587e8c965a1f14f8bd3da824022e6a8de3183a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 75587e8 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild