$ git clone -n https://src.fedoraproject.org/rpms/dx.git /var/lib/mock/f40-build-773151-126850/root/chroot_tmpdir/scmroot/dx
Cloning into '/var/lib/mock/f40-build-773151-126850/root/chroot_tmpdir/scmroot/dx'...
$ git fetch origin 38042e0fd5aefd2153fa9a02de4f80bd1db6fdff:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/dx
 * [new ref]         38042e0fd5aefd2153fa9a02de4f80bd1db6fdff -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 38042e0 Fix more C compatibility issues (#2154342)