$ git clone -n https://src.fedoraproject.org/rpms/girara.git /var/lib/mock/f40-build-1972553-25231/root/chroot_tmpdir/scmroot/girara
Cloning into '/var/lib/mock/f40-build-1972553-25231/root/chroot_tmpdir/scmroot/girara'...
$ git fetch origin 1fed32e38c92aeafe0c34613632e6d2e5ea21160:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/girara
 * [new ref]         1fed32e38c92aeafe0c34613632e6d2e5ea21160 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1fed32e feat: update to 0.4.4 (rhbz#2258262)