$ git clone -n https://src.fedoraproject.org/rpms/shntool.git /var/lib/mock/f45-build-35940-700/root/chroot_tmpdir/scmroot/shntool
Cloning into '/var/lib/mock/f45-build-35940-700/root/chroot_tmpdir/scmroot/shntool'...
$ git fetch origin 7f7c945d2b3cbec0442dcae5d2fdbf2f58899355:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/shntool
 * [new ref]         7f7c945d2b3cbec0442dcae5d2fdbf2f58899355 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7f7c945 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild