$ git clone -n https://src.fedoraproject.org/rpms/flamp.git /var/lib/mock/f39-build-1462070-33299/root/chroot_tmpdir/scmroot/flamp
Cloning into '/var/lib/mock/f39-build-1462070-33299/root/chroot_tmpdir/scmroot/flamp'...
$ git fetch origin aa37ec0c2d41caead22d3e4d62f9b2eb452692dd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/flamp
 * [new ref]         aa37ec0c2d41caead22d3e4d62f9b2eb452692dd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at aa37ec0 Update to 2.2.09.