$ git clone -n https://src.fedoraproject.org/rpms/golang-github-zmap-zcrypto.git /var/lib/mock/f40-build-2199161-51724/root/chroot_tmpdir/scmroot/golang-github-zmap-zcrypto
Cloning into '/var/lib/mock/f40-build-2199161-51724/root/chroot_tmpdir/scmroot/golang-github-zmap-zcrypto'...
$ git fetch origin c8b3610f7c67f382f054b36489cce5e01c3ad4c1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-zmap-zcrypto
 * [new ref]         c8b3610f7c67f382f054b36489cce5e01c3ad4c1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c8b3610 Bump to commit 64a80ee67140cba7184e874ad522497452a9f92c