$ git clone -n https://src.fedoraproject.org/rpms/golang-github-azure-sdk.git /var/lib/mock/f40-build-2262209-54479/root/chroot_tmpdir/scmroot/golang-github-azure-sdk
Cloning into '/var/lib/mock/f40-build-2262209-54479/root/chroot_tmpdir/scmroot/golang-github-azure-sdk'...
$ git fetch origin b479e8df30d679e80e0db339a3883c0a0eb589a1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-azure-sdk
 * [new ref]         b479e8df30d679e80e0db339a3883c0a0eb589a1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b479e8d Remove deprecated %patchN syntax