$ git clone -n https://src.fedoraproject.org/rpms/gap-pkg-curlinterface.git /var/lib/mock/f40-build-2590579-62627/root/chroot_tmpdir/scmroot/gap-pkg-curlinterface
Cloning into '/var/lib/mock/f40-build-2590579-62627/root/chroot_tmpdir/scmroot/gap-pkg-curlinterface'...
$ git fetch origin e816534a7af440b693525a2ae17260752a8bf8df:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gap-pkg-curlinterface
 * [new ref]         e816534a7af440b693525a2ae17260752a8bf8df -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e816534 Rebuild for gap 4.13.0