$ git clone -n https://src.fedoraproject.org/rpms/goocanvas.git /var/lib/mock/f40-build-2595909-62746/root/chroot_tmpdir/scmroot/goocanvas
Cloning into '/var/lib/mock/f40-build-2595909-62746/root/chroot_tmpdir/scmroot/goocanvas'...
$ git fetch origin 93415c096eb53f1321ae5bfadc7d8e3097d88d46:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/goocanvas
 * [new ref]         93415c096eb53f1321ae5bfadc7d8e3097d88d46 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 93415c0 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild