$ git clone -n https://src.fedoraproject.org/rpms/c++-gtk-utils.git /var/lib/mock/f41-build-875040-16267/root/chroot_tmpdir/scmroot/c++-gtk-utils
Cloning into '/var/lib/mock/f41-build-875040-16267/root/chroot_tmpdir/scmroot/c++-gtk-utils'...
$ git fetch origin 7d81820115eebdc9bb109e3c56a06db4b2578dbf:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/c++-gtk-utils
 * [new ref]         7d81820115eebdc9bb109e3c56a06db4b2578dbf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7d81820 Eliminate use of obsolete %patchN syntax (#2283636)