$ git clone -n https://src.fedoraproject.org/rpms/ghc-filepath-bytestring.git /var/lib/mock/f41-build-side-1-2805280-32863/root/chroot_tmpdir/scmroot/ghc-filepath-bytestring
Cloning into '/var/lib/mock/f41-build-side-1-2805280-32863/root/chroot_tmpdir/scmroot/ghc-filepath-bytestring'...
$ git fetch origin e86851f76233bf72a2e99cd37fae0515c3a1f704:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-filepath-bytestring
 * [new ref]         e86851f76233bf72a2e99cd37fae0515c3a1f704 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e86851f bump release