$ git clone -n https://src.fedoraproject.org/rpms/golang-github-youmark-pkcs8.git /var/lib/mock/f41-build-side-1-2640842-26659/root/chroot_tmpdir/scmroot/golang-github-youmark-pkcs8
Cloning into '/var/lib/mock/f41-build-side-1-2640842-26659/root/chroot_tmpdir/scmroot/golang-github-youmark-pkcs8'...
$ git fetch origin 7a29d0539c134d5772607d91e37b65324983e976:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-youmark-pkcs8
 * [new ref]         7a29d0539c134d5772607d91e37b65324983e976 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7a29d05 Update to 1.3 upstream release