$ git clone -n https://src.fedoraproject.org/rpms/qrca.git /var/lib/mock/f45-build-33987-676/root/chroot_tmpdir/scmroot/qrca
Cloning into '/var/lib/mock/f45-build-33987-676/root/chroot_tmpdir/scmroot/qrca'...
$ git fetch origin fa2a06dbc3a7b3cf6a0782215377e3f4f093bb54:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qrca
 * [new ref]         fa2a06dbc3a7b3cf6a0782215377e3f4f093bb54 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fa2a06d 26.08.1