$ git clone -n https://src.fedoraproject.org/rpms/glow.git /var/lib/mock/f42-build-side-1-3582738-46886/root/chroot_tmpdir/scmroot/glow
Cloning into '/var/lib/mock/f42-build-side-1-3582738-46886/root/chroot_tmpdir/scmroot/glow'...
$ git fetch origin d180a8ab338782f2bf3957f705c7ab7ded64e1ea:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/glow
 * [new ref]         d180a8ab338782f2bf3957f705c7ab7ded64e1ea -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d180a8a Update to version 2.1.1 rhbz#2369460