$ git clone -n https://src.fedoraproject.org/rpms/tomcat.git /var/lib/mock/f41-build-side-1-2907929-34729/root/chroot_tmpdir/scmroot/tomcat
Cloning into '/var/lib/mock/f41-build-side-1-2907929-34729/root/chroot_tmpdir/scmroot/tomcat'...
$ git fetch origin 49a59471a6d27e8d7e38ad9a3d612ac2a92fac46:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/tomcat
 * [new ref]         49a59471a6d27e8d7e38ad9a3d612ac2a92fac46 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 49a5947 Update to 9.0.96 upstream release