$ git clone -n https://src.fedoraproject.org/rpms/ghc-haskell-src-exts-util.git /var/lib/mock/f40-build-2145859-50880/root/chroot_tmpdir/scmroot/ghc-haskell-src-exts-util
Cloning into '/var/lib/mock/f40-build-2145859-50880/root/chroot_tmpdir/scmroot/ghc-haskell-src-exts-util'...
$ git fetch origin 7d93d5ab526b9c4490dcbeab5aade1f1249ce027:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-haskell-src-exts-util
 * [new ref]         7d93d5ab526b9c4490dcbeab5aade1f1249ce027 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7d93d5a bump release