$ git clone -n https://src.fedoraproject.org/rpms/golang-github-matryer-try.git /var/lib/mock/f45-build-12212-439/root/chroot_tmpdir/scmroot/golang-github-matryer-try
Cloning into '/var/lib/mock/f45-build-12212-439/root/chroot_tmpdir/scmroot/golang-github-matryer-try'...
$ git fetch origin d31825250bad5a839da0b4c46892cdc89a093b82:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-matryer-try
 * [new ref]         d31825250bad5a839da0b4c46892cdc89a093b82 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d318252 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild