$ git clone -n https://src.fedoraproject.org/rpms/gap-pkg-edim.git /var/lib/mock/f45-build-9475-404/root/chroot_tmpdir/scmroot/gap-pkg-edim
Cloning into '/var/lib/mock/f45-build-9475-404/root/chroot_tmpdir/scmroot/gap-pkg-edim'...
$ git fetch origin 5ee6d57ab4ce45d32003b4f4a7fc623a2cf54bc6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gap-pkg-edim
 * [new ref]         5ee6d57ab4ce45d32003b4f4a7fc623a2cf54bc6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5ee6d57 Use the GAP declarative buildsystem