$ git clone -n https://src.fedoraproject.org/rpms/ghc-Glob.git /var/lib/mock/f38-build-side-42-init-devel-806669-28209/root/chroot_tmpdir/scmroot/ghc-Glob
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-806669-28209/root/chroot_tmpdir/scmroot/ghc-Glob'...
$ git fetch origin 621bbfad3952b1709a8f1ffa0bd350cdcfe531ab:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-Glob
 * [new ref]         621bbfad3952b1709a8f1ffa0bd350cdcfe531ab -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 621bbfa Convert to %autorelease and %autochangelog