$ git clone -n https://src.fedoraproject.org/rpms/pcmanx-gtk2.git /var/lib/mock/f41-build-side-1-2650518-27600/root/chroot_tmpdir/scmroot/pcmanx-gtk2
Cloning into '/var/lib/mock/f41-build-side-1-2650518-27600/root/chroot_tmpdir/scmroot/pcmanx-gtk2'...
$ git fetch origin 2ca876a5677f8c3eda2326ecc98688181ba722df:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/pcmanx-gtk2
 * [new ref]         2ca876a5677f8c3eda2326ecc98688181ba722df -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2ca876a convert GPLv2+ license to SPDX