$ git clone -n https://src.fedoraproject.org/rpms/ghc-resolv.git /var/lib/mock/f38-build-side-42-init-devel-1025609-29686/root/chroot_tmpdir/scmroot/ghc-resolv
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1025609-29686/root/chroot_tmpdir/scmroot/ghc-resolv'...
$ git fetch origin 121f5324ddf6a55520c7fcdce1b7f7522d4b4f38:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-resolv
 * [new ref]         121f5324ddf6a55520c7fcdce1b7f7522d4b4f38 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 121f532 Convert to %autorelease and %autochangelog