$ git clone -n https://src.fedoraproject.org/rpms/aunit.git /var/lib/mock/f42-build-3426243-45168/root/chroot_tmpdir/scmroot/aunit
Cloning into '/var/lib/mock/f42-build-3426243-45168/root/chroot_tmpdir/scmroot/aunit'...
$ git fetch origin 1d28527b97d0d81cbe8d93c1ac63609560aef98e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/aunit
 * [new ref]         1d28527b97d0d81cbe8d93c1ac63609560aef98e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1d28527 Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild