$ git clone -n https://src.fedoraproject.org/rpms/fonts-compare.git /var/lib/mock/f38-build-side-42-init-devel-803475-28144/root/chroot_tmpdir/scmroot/fonts-compare
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-803475-28144/root/chroot_tmpdir/scmroot/fonts-compare'...
$ git fetch origin 45b3d7132b75dcba484e6ab28107278052c98624:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/fonts-compare
 * [new ref]         45b3d7132b75dcba484e6ab28107278052c98624 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 45b3d71 changelog fixing