$ git clone -n https://src.fedoraproject.org/rpms/redis.git /var/lib/mock/f39-build-1531035-36202/root/chroot_tmpdir/scmroot/redis
Cloning into '/var/lib/mock/f39-build-1531035-36202/root/chroot_tmpdir/scmroot/redis'...
$ git fetch origin 8e80338fe2cba2c52b3f0fd9f378128984da91f1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/redis
 * [new ref]         8e80338fe2cba2c52b3f0fd9f378128984da91f1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8e80338 v7.2.3