$ git clone -n https://src.fedoraproject.org/rpms/dola-gleaner.git /var/lib/mock/f43-build-side-114909-61016145-6587718/root/chroot_tmpdir/scmroot/dola-gleaner
Cloning into '/var/lib/mock/f43-build-side-114909-61016145-6587718/root/chroot_tmpdir/scmroot/dola-gleaner'...
$ git fetch origin 4f8f0a381a8a5f87c09013e295a19d6375338583:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/dola-gleaner
 * [new ref]         4f8f0a381a8a5f87c09013e295a19d6375338583 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4f8f0a3 Non-bootstrap build [skip changelog]