$ git clone -n https://src.fedoraproject.org/rpms/ghc-blaze-markup.git /var/lib/mock/f40-build-743574-111265/root/chroot_tmpdir/scmroot/ghc-blaze-markup
Cloning into '/var/lib/mock/f40-build-743574-111265/root/chroot_tmpdir/scmroot/ghc-blaze-markup'...
$ git fetch origin 9593170fbfbd55743dbf14f75f79792c1c62bf73:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-blaze-markup
 * [new ref]         9593170fbfbd55743dbf14f75f79792c1c62bf73 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9593170 revised .cabal file