$ git clone -n https://src.fedoraproject.org/rpms/tayga.git /var/lib/mock/f41-build-side-1-2670513-29058/root/chroot_tmpdir/scmroot/tayga
Cloning into '/var/lib/mock/f41-build-side-1-2670513-29058/root/chroot_tmpdir/scmroot/tayga'...
$ git fetch origin 99a1a51a26d5a8d52aee868bf23dc2bf6c900163:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/tayga
 * [new ref]         99a1a51a26d5a8d52aee868bf23dc2bf6c900163 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 99a1a51 convert GPLv2+ license to SPDX