$ git clone -n https://src.fedoraproject.org/rpms/resalloc-aws.git /var/lib/mock/f39-build-1456770-32934/root/chroot_tmpdir/scmroot/resalloc-aws
Cloning into '/var/lib/mock/f39-build-1456770-32934/root/chroot_tmpdir/scmroot/resalloc-aws'...
$ git fetch origin 9ef354699a209f27aebd0568db07b0f48dfc1fad:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/resalloc-aws
 * [new ref]         9ef354699a209f27aebd0568db07b0f48dfc1fad -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9ef3546 Update resalloc-aws to 1.5-1