$ git clone -n https://src.fedoraproject.org/rpms/rubygem-sqlite3.git /var/lib/mock/f41-build-1197192-22336/root/chroot_tmpdir/scmroot/rubygem-sqlite3
Cloning into '/var/lib/mock/f41-build-1197192-22336/root/chroot_tmpdir/scmroot/rubygem-sqlite3'...
$ git fetch origin d0602728039835e4cc2e9a22406700722541d90b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-sqlite3
 * [new ref]         d0602728039835e4cc2e9a22406700722541d90b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d060272 Eliminate use of obsolete %patchN syntax (#2283636)