$ git clone -n https://src.fedoraproject.org/rpms/golang-github-bugsnag-panicwrap.git /var/lib/mock/f41-build-1040016-18915/root/chroot_tmpdir/scmroot/golang-github-bugsnag-panicwrap
Cloning into '/var/lib/mock/f41-build-1040016-18915/root/chroot_tmpdir/scmroot/golang-github-bugsnag-panicwrap'...
$ git fetch origin a1804a86c3bf9e200312363a7c46a00a9125f1ed:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-bugsnag-panicwrap
 * [new ref]         a1804a86c3bf9e200312363a7c46a00a9125f1ed -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a1804a8 Update spec