$ git clone -n https://src.fedoraproject.org/rpms/openssl-gost-engine.git /var/lib/mock/f42-build-side-1-3589300-46957/root/chroot_tmpdir/scmroot/openssl-gost-engine
Cloning into '/var/lib/mock/f42-build-side-1-3589300-46957/root/chroot_tmpdir/scmroot/openssl-gost-engine'...
$ git fetch origin 0fc0838256e0f8161c64cc5da0c75b72f1a2365a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/openssl-gost-engine
 * [new ref]         0fc0838256e0f8161c64cc5da0c75b72f1a2365a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0fc0838 Fix dependency on openssl engine