$ git clone -n https://src.fedoraproject.org/rpms/golang-github-oschwald-geoip2.git /var/lib/mock/f41-build-1036220-18712/root/chroot_tmpdir/scmroot/golang-github-oschwald-geoip2
Cloning into '/var/lib/mock/f41-build-1036220-18712/root/chroot_tmpdir/scmroot/golang-github-oschwald-geoip2'...
$ git fetch origin 62692f14934aebec01c4f282ec6096ec76d6e9a1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-oschwald-geoip2
 * [new ref]         62692f14934aebec01c4f282ec6096ec76d6e9a1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 62692f1 Fix FTBFS