$ git clone -n https://src.fedoraproject.org/rpms/libomemo-c.git /var/lib/mock/f42-build-side-1-3569462-46747/root/chroot_tmpdir/scmroot/libomemo-c
Cloning into '/var/lib/mock/f42-build-side-1-3569462-46747/root/chroot_tmpdir/scmroot/libomemo-c'...
$ git fetch origin 8f22daa9cc3101013b8a660fd7f870ca0b543404:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libomemo-c
 * [new ref]         8f22daa9cc3101013b8a660fd7f870ca0b543404 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8f22daa 0.5.1