$ git clone -n https://src.fedoraproject.org/rpms/yara.git /var/lib/mock/f41-build-815063-149384/root/chroot_tmpdir/scmroot/yara
Cloning into '/var/lib/mock/f41-build-815063-149384/root/chroot_tmpdir/scmroot/yara'...
$ git fetch origin e9b10828c2fd0f0b373a29427994394e47644dd0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/yara
 * [new ref]         e9b10828c2fd0f0b373a29427994394e47644dd0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e9b1082 bump to 4.5.1