$ git clone -n https://src.fedoraproject.org/rpms/mdadm.git /var/lib/mock/f39-build-1533383-36227/root/chroot_tmpdir/scmroot/mdadm
Cloning into '/var/lib/mock/f39-build-1533383-36227/root/chroot_tmpdir/scmroot/mdadm'...
$ git fetch origin c3138fdc957af0cb737dabc030a2f747ba4a533a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mdadm
 * [new ref]         c3138fdc957af0cb737dabc030a2f747ba4a533a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c3138fd Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild