$ git clone -n https://src.fedoraproject.org/rpms/erlang-folsom.git /var/lib/mock/f41-build-832540-14894/root/chroot_tmpdir/scmroot/erlang-folsom
Cloning into '/var/lib/mock/f41-build-832540-14894/root/chroot_tmpdir/scmroot/erlang-folsom'...
$ git fetch origin 0efc1ae44a8a4758a06bce862a57a95ff2e4a5fe:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/erlang-folsom
 * [new ref]         0efc1ae44a8a4758a06bce862a57a95ff2e4a5fe -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0efc1ae Switch to SPDX tag