$ git clone -n https://src.fedoraproject.org/rpms/CImg.git /var/lib/mock/f41-build-side-1-2630190-25598/root/chroot_tmpdir/scmroot/CImg
Cloning into '/var/lib/mock/f41-build-side-1-2630190-25598/root/chroot_tmpdir/scmroot/CImg'...
$ git fetch origin 1d307af8ee5dbba738ad960f00d2c59cb88d2543:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/CImg
 * [new ref]         1d307af8ee5dbba738ad960f00d2c59cb88d2543 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1d307af Rebuilt for https://fedoraproject.org/wiki/Fedora_41_Mass_Rebuild