$ git clone -n https://src.fedoraproject.org/rpms/golang-github-sagikazarmark-slog-shim.git /var/lib/mock/f38-build-side-42-init-devel-1417225-31456/root/chroot_tmpdir/scmroot/golang-github-sagikazarmark-slog-shim
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1417225-31456/root/chroot_tmpdir/scmroot/golang-github-sagikazarmark-slog-shim'...
$ git fetch origin 8581924d3a708fd7ee51d4c91add7c3637d6f56d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-sagikazarmark-slog-shim
 * [new ref]         8581924d3a708fd7ee51d4c91add7c3637d6f56d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8581924 Initial package - Closes rhbz#2242662