$ git clone -n https://src.fedoraproject.org/rpms/markdownpart.git /var/lib/mock/f45-build-18031-507/root/chroot_tmpdir/scmroot/markdownpart
Cloning into '/var/lib/mock/f45-build-18031-507/root/chroot_tmpdir/scmroot/markdownpart'...
$ git fetch origin 5e707bcb1b29511e70148c512ca65a512c87f07c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/markdownpart
 * [new ref]         5e707bcb1b29511e70148c512ca65a512c87f07c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5e707bc 26.08.1