$ git clone -n https://src.fedoraproject.org/rpms/protozero.git /var/lib/mock/f45-build-28961-634/root/chroot_tmpdir/scmroot/protozero
Cloning into '/var/lib/mock/f45-build-28961-634/root/chroot_tmpdir/scmroot/protozero'...
$ git fetch origin b4ec8c073bebcd315e6d0182b26560953b14bf22:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/protozero
 * [new ref]         b4ec8c073bebcd315e6d0182b26560953b14bf22 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b4ec8c0 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild