$ git clone -n https://src.fedoraproject.org/rpms/fstransform.git /var/lib/mock/f40-build-2438044-60873/root/chroot_tmpdir/scmroot/fstransform
Cloning into '/var/lib/mock/f40-build-2438044-60873/root/chroot_tmpdir/scmroot/fstransform'...
$ git fetch origin b7c79d5dd9951b63f0cd46f1ad4b7d8dd7dc6fa5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/fstransform
 * [new ref]         b7c79d5dd9951b63f0cd46f1ad4b7d8dd7dc6fa5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b7c79d5 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild