$ git clone -n https://src.fedoraproject.org/rpms/ghc-authenticate-oauth.git /var/lib/mock/f39-build-1926444-43041/root/chroot_tmpdir/scmroot/ghc-authenticate-oauth
Cloning into '/var/lib/mock/f39-build-1926444-43041/root/chroot_tmpdir/scmroot/ghc-authenticate-oauth'...
$ git fetch origin 636a1f137b805f7aebba53c09e5cd19c23352939:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-authenticate-oauth
 * [new ref]         636a1f137b805f7aebba53c09e5cd19c23352939 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 636a1f1 bump release