$ git clone -n https://src.fedoraproject.org/rpms/lxhotkey.git /var/lib/mock/f42-build-side-1-3501669-45976/root/chroot_tmpdir/scmroot/lxhotkey
Cloning into '/var/lib/mock/f42-build-side-1-3501669-45976/root/chroot_tmpdir/scmroot/lxhotkey'...
$ git fetch origin 48dd9e3b0c4789c2f0c007dfea60577929a106f2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/lxhotkey
 * [new ref]         48dd9e3b0c4789c2f0c007dfea60577929a106f2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 48dd9e3 0.1.2