$ git clone -n https://src.fedoraproject.org/rpms/bind.git /var/lib/mock/f40-build-801420-143781/root/chroot_tmpdir/scmroot/bind
Cloning into '/var/lib/mock/f40-build-801420-143781/root/chroot_tmpdir/scmroot/bind'...
$ git fetch origin e79cdb27f2e4016952d8b1f16dfc715e51734f74:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/bind
 * [new ref]         e79cdb27f2e4016952d8b1f16dfc715e51734f74 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e79cdb2 Include dependency on python3-dns from SYSTEMTEST suite