$ git clone -n https://src.fedoraproject.org/rpms/gtkterm.git /var/lib/mock/f45-build-13192-447/root/chroot_tmpdir/scmroot/gtkterm
Cloning into '/var/lib/mock/f45-build-13192-447/root/chroot_tmpdir/scmroot/gtkterm'...
$ git fetch origin b4cb5c73416e1ae41efb21b9cf77b3dc0cd13e16:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gtkterm
 * [new ref]         b4cb5c73416e1ae41efb21b9cf77b3dc0cd13e16 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b4cb5c7 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild