$ git clone -n https://src.fedoraproject.org/rpms/gimp-data-extras.git /var/lib/mock/f40-build-2086128-50108/root/chroot_tmpdir/scmroot/gimp-data-extras
Cloning into '/var/lib/mock/f40-build-2086128-50108/root/chroot_tmpdir/scmroot/gimp-data-extras'...
$ git fetch origin dc76331f515ac5882852790570c04332d39afdcf:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gimp-data-extras
 * [new ref]         dc76331f515ac5882852790570c04332d39afdcf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dc76331 Fix flatpak build