$ git clone -n https://src.fedoraproject.org/rpms/kguitar.git /var/lib/mock/f42-build-3402172-45132/root/chroot_tmpdir/scmroot/kguitar
Cloning into '/var/lib/mock/f42-build-3402172-45132/root/chroot_tmpdir/scmroot/kguitar'...
$ git fetch origin 84fc6c02bab6838a30c7f74476c98da5ae09a689:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kguitar
 * [new ref]         84fc6c02bab6838a30c7f74476c98da5ae09a689 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 84fc6c0 Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild