$ git clone -n https://src.fedoraproject.org/rpms/mt-st.git /var/lib/mock/f40-build-2012141-45772/root/chroot_tmpdir/scmroot/mt-st
Cloning into '/var/lib/mock/f40-build-2012141-45772/root/chroot_tmpdir/scmroot/mt-st'...
$ git fetch origin a7449b17fc4ff37f553cfc477b701504c8f4ba49:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mt-st
 * [new ref]         a7449b17fc4ff37f553cfc477b701504c8f4ba49 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a7449b1 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild