$ git clone -n https://src.fedoraproject.org/rpms/golang-software-sslmate-src-pkcs12.git /var/lib/mock/f38-build-side-42-init-devel-1086301-30027/root/chroot_tmpdir/scmroot/golang-software-sslmate-src-pkcs12
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1086301-30027/root/chroot_tmpdir/scmroot/golang-software-sslmate-src-pkcs12'...
$ git fetch origin a5999c6febe63eae88532273a411cbe2865b9127:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-software-sslmate-src-pkcs12
 * [new ref]         a5999c6febe63eae88532273a411cbe2865b9127 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a5999c6 Added the README