$ git clone -n https://src.fedoraproject.org/rpms/kf5-kauth.git /var/lib/mock/f45-build-14784-463/root/chroot_tmpdir/scmroot/kf5-kauth
Cloning into '/var/lib/mock/f45-build-14784-463/root/chroot_tmpdir/scmroot/kf5-kauth'...
$ git fetch origin 3bc6e3f22ed4954749e83891f8465ecc2391e700:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf5-kauth
 * [new ref]         3bc6e3f22ed4954749e83891f8465ecc2391e700 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3bc6e3f Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild