$ git clone -n https://src.fedoraproject.org/rpms/gdb.git /var/lib/mock/f41-build-1200006-22410/root/chroot_tmpdir/scmroot/gdb
Cloning into '/var/lib/mock/f41-build-1200006-22410/root/chroot_tmpdir/scmroot/gdb'...
$ git fetch origin 199e8a4899a67d4db2cb9bc66cbb543f76763fb2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gdb
 * [new ref]         199e8a4899a67d4db2cb9bc66cbb543f76763fb2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 199e8a4 Remove gdb-glibc-strstr-workaround.patch