$ git clone -n https://src.fedoraproject.org/rpms/tomcat.git /var/lib/mock/f41-build-side-1-2844579-33876/root/chroot_tmpdir/scmroot/tomcat
Cloning into '/var/lib/mock/f41-build-side-1-2844579-33876/root/chroot_tmpdir/scmroot/tomcat'...
$ git fetch origin 4493587d665c7c9fafa1ccbb699cd601e0ce5f10:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/tomcat
 * [new ref]         4493587d665c7c9fafa1ccbb699cd601e0ce5f10 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4493587 Update to 9.0.95 upstream release