$ git clone -n https://src.fedoraproject.org/rpms/ghc-cmark-gfm.git /var/lib/mock/f38-build-side-42-init-devel-632495-26380/root/chroot_tmpdir/scmroot/ghc-cmark-gfm
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-632495-26380/root/chroot_tmpdir/scmroot/ghc-cmark-gfm'...
$ git fetch origin c5ec574590467ce68470fe82f2b2004f18ad6027:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-cmark-gfm
 * [new ref]         c5ec574590467ce68470fe82f2b2004f18ad6027 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c5ec574 Convert to %autorelease and %autochangelog