$ git clone -n https://src.fedoraproject.org/rpms/kontact.git /var/lib/mock/f42-build-864327-172280/root/chroot_tmpdir/scmroot/kontact
Cloning into '/var/lib/mock/f42-build-864327-172280/root/chroot_tmpdir/scmroot/kontact'...
$ git fetch origin fce05a5a323687ef8f47b3751ad3bec2afdf8f5d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kontact
 * [new ref]         fce05a5a323687ef8f47b3751ad3bec2afdf8f5d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fce05a5 24.12.0