$ git clone -n https://src.fedoraproject.org/rpms/gemdropx.git /var/lib/mock/f45-build-9721-408/root/chroot_tmpdir/scmroot/gemdropx
Cloning into '/var/lib/mock/f45-build-9721-408/root/chroot_tmpdir/scmroot/gemdropx'...
$ git fetch origin 43780bba9b02a169b795014b39766a105630bbea:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gemdropx
 * [new ref]         43780bba9b02a169b795014b39766a105630bbea -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 43780bb Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild