$ git clone -n https://src.fedoraproject.org/rpms/perl-Gnome2-Canvas.git /var/lib/mock/f39-build-1513679-35629/root/chroot_tmpdir/scmroot/perl-Gnome2-Canvas
Cloning into '/var/lib/mock/f39-build-1513679-35629/root/chroot_tmpdir/scmroot/perl-Gnome2-Canvas'...
$ git fetch origin 4189f84bfa7b0e0e5a63a5889672a2bfb00a4355:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Gnome2-Canvas
 * [new ref]         4189f84bfa7b0e0e5a63a5889672a2bfb00a4355 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4189f84 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild