$ git clone -n https://src.fedoraproject.org/rpms/libusbg.git /var/lib/mock/f41-build-1037341-18787/root/chroot_tmpdir/scmroot/libusbg
Cloning into '/var/lib/mock/f41-build-1037341-18787/root/chroot_tmpdir/scmroot/libusbg'...
$ git fetch origin fdfe5facdcb4525c93c6d86ed4988828f30f01af:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libusbg
 * [new ref]         fdfe5facdcb4525c93c6d86ed4988828f30f01af -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fdfe5fa Eliminate use of obsolete %patchN syntax (#2283636)